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Proceedings Papers

High Effectiveness Tip Cooling Using Inclined Slots

Macdonald Mutekwa, Joao Vieira, Maximilian G. Farfaras, John D. Coull, Marko Bacic, Peter T. Ireland
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A007, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121742
https://doi.org/10.1115/GT2024-121742
View Paper titled, High Effectiveness Tip Cooling Using Inclined Slots
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Topics: Cooling, Coolants, Design, Blades, Pressure, Turbines, Aerodynamics, Cascades (Fluid dynamics), Density, Engines
Proceedings Papers

Acoustic Excitation As a Flow Control Technique in a High-Speed Compressor Cascade

Seyfettin Coskun, David John Rajendran, Vassilios Pachidis, Marko Bacic
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A045, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128637
https://doi.org/10.1115/GT2024-128637
View Paper titled, Acoustic Excitation As a Flow Control Technique in a High-Speed Compressor Cascade
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Topics: Acoustics, Cascades (Fluid dynamics), Compressors, Excitation, Flow control
Journal Articles

Integrated Hybrid Engine Cycle Design and Power Management Optimization

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Justin Norman, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2024, 146(10): 101007.
Paper No: GTP-24-1037
https://doi.org/10.1115/1.4065020
Published Online: April 22, 2024
View Article titled, Integrated Hybrid Engine Cycle Design and Power Management Optimization
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Topics: Aircraft, Cycles, Design, Fuels, Gas turbines, Optimization, Retrofitting, Batteries
Proceedings Papers

Integrated Hybrid Engine Cycle Design and Power Management Optimization

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Marko Bacic, Justin Norman
Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A027, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103131
https://doi.org/10.1115/GT2023-103131
View Paper titled, Integrated Hybrid Engine Cycle Design and Power Management Optimization
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Topics: Cycles, Design, Hybrid engines, Optimization, Fuels, Aircraft, Gas turbines, Retrofitting, Architecture, Density
Journal Articles

On the Effects of Optimal Implementation of Variable Rotor Speed and Power Management on Hybrid-Electric Rotorcraft

Chana Anna Saias, Ioannis Goulos, Vassilios Pachidis, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2023, 145(3): 031028.
Paper No: GTP-22-1245
https://doi.org/10.1115/1.4056855
Published Online: February 23, 2023
View Article titled, On the Effects of Optimal Implementation of Variable Rotor Speed and Power Management on Hybrid-Electric Rotorcraft
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Topics: Fuels, Rotors, Engines, Design, Batteries, Weight (Mass), Flight, Optimization
Journal Articles

Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Justin Norman, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2023, 145(3): 031002.
Paper No: GTP-22-1416
https://doi.org/10.1115/1.4055635
Published Online: December 5, 2022
View Article titled, Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems
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Topics: Aircraft, Batteries, Cycles, Design, Engines, Retrofitting, Fuels
Proceedings Papers

Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems

Raj Ghelani, Ioannis Roumeliotis, Chana Anna Saias, Christos Mourouzidis, Vassilios Pachidis, Justin Norman, Marko Bacic
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A026, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82478
https://doi.org/10.1115/GT2022-82478
View Paper titled, Design Methodology and Mission Assessment of Parallel Hybrid Electric Propulsion Systems
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Topics: Design methodology, Electric propulsion, Fuels, Engines, Cycles, Aircraft, Gas turbines, Pressure, Algorithms, Architecture
Journal Articles

Novel Operating Mode of a Fluidic Oscillator

Chris J. Nicholls, Brian M. T. Tang, James Turner, Marko Bacic
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. July 2022, 144(7): 071501.
Paper No: FE-21-1510
https://doi.org/10.1115/1.4053554
Published Online: February 23, 2022
View Article titled, Novel Operating Mode of a Fluidic Oscillator
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Topics: Flow (Dynamics), Oscillations, Pressure, Valves
Journal Articles

Design Exploration and Performance Assessment of Advanced Recuperated Hybrid-Electric Urban Air Mobility Rotorcraft

Chana Anna Saias, Ioannis Roumeliotis, Ioannis Goulos, Vassilios Pachidis, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2022, 144(3): 031023.
Paper No: GTP-21-1262
https://doi.org/10.1115/1.4052955
Published Online: January 4, 2022
View Article titled, Design Exploration and Performance Assessment of Advanced Recuperated Hybrid-Electric Urban Air Mobility Rotorcraft
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Topics: Cycles, Design, Emissions, Engines, Fuels, Heat exchangers, Power stations, Rotors, Weight (Mass), Cities
Journal Articles

Preliminary Design of Hybrid-Electric Propulsion Systems for Emerging Urban Air Mobility Rotorcraft Architectures

Chana Anna Saias, Ioannis Goulos, Ioannis Roumeliotis, Vassilios Pachidis, Marko Bacic
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2021, 143(11): 111015.
Paper No: GTP-21-1162
https://doi.org/10.1115/1.4052057
Published Online: October 4, 2021
View Article titled, Preliminary Design of Hybrid-Electric Propulsion Systems for Emerging Urban Air Mobility Rotorcraft Architectures
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Topics: Batteries, Design, Propulsion systems, Rotors, Weight (Mass), Gas turbines, Power stations, Fuels, Flight, Engines
Journal Articles

Fluid Dynamics of a Bistable Diverter Under Ultrasonic Excitation—Part II: Flow Visualization and Fundamental Mechanisms

Michael Mair, Marko Bacic, Kharthik Chakravarthy, Ben Williams
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. July 2021, 143(7): 071202.
Paper No: FE-20-1222
https://doi.org/10.1115/1.4050084
Published Online: April 9, 2021
View Article titled, Fluid Dynamics of a Bistable Diverter Under Ultrasonic Excitation—Part II: Flow Visualization and Fundamental Mechanisms
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Topics: Excitation, Flow (Dynamics), Shear (Mechanics), Nozzles
Journal Articles

Fluid Dynamics of a Bistable Diverter Under Ultrasonic Excitation—Part I: Performance Characteristic

Michael Mair, Marko Bacic
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. July 2021, 143(7): 071201.
Paper No: FE-20-1221
https://doi.org/10.1115/1.4050083
Published Online: April 9, 2021
View Article titled, Fluid Dynamics of a Bistable Diverter Under Ultrasonic Excitation—Part I: Performance Characteristic
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Topics: Acoustics, Excitation, Flow (Dynamics), Nozzles, Pressure, Shear (Mechanics), Design, Oscillations, Fluid dynamics, Density
Journal Articles

On Dynamics of Acoustically Driven Bistable Fluidic Valves

Michael Mair, Marko Bacic, Peter Ireland
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2019, 141(6): 061202.
Paper No: FE-18-1112
https://doi.org/10.1115/1.4041890
Published Online: December 24, 2018
View Article titled, On Dynamics of Acoustically Driven Bistable Fluidic Valves
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Topics: Acoustics, Excitation, Flow (Dynamics), Pressure, Shear (Mechanics), Valves, Dynamics (Mechanics), Vortices, Switches
Journal Articles

On the Real-Time Estimation of Disk Temperature Spatial Distributions in Aeroengines

Andrew van Paridon, Marko Bacic, Peter T. Ireland, Ron Daniel
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2018, 140(3): 031901.
Paper No: GTP-17-1166
https://doi.org/10.1115/1.4037870
Published Online: October 17, 2017
View Article titled, On the Real-Time Estimation of Disk Temperature Spatial Distributions in Aeroengines
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Topics: Disks, Filters, Kalman filters, Temperature, Errors, Flight, Simulation
Proceedings Papers

Effect of Active Modulation of Through-Casing Coolant Injection on Turbine Efficiency

Brian M. T. Tang, Marko Bacic, Peter T. Ireland
Proc. ASME. GT2017, Volume 2A: Turbomachinery, V02AT40A031, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64705
https://doi.org/10.1115/GT2017-64705
View Paper titled, Effect of Active Modulation of Through-Casing Coolant Injection on Turbine Efficiency
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Topics: Coolants, Turbines, Cooling, Flow (Dynamics), Leakage flows, Pressure, Blades, Rotors, Axial flow, Boundary-value problems
Journal Articles

Experimental and Numerical Investigation of Annular Casing Impingement Arrays for Faster Casing Response

Andrew Dann, Priyanka Dhopade, Marko Bacic, Peter Ireland, Leo Lewis
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2017, 139(9): 092603.
Paper No: GTP-17-1005
https://doi.org/10.1115/1.4036061
Published Online: April 11, 2017
View Article titled, Experimental and Numerical Investigation of Annular Casing Impingement Arrays for Faster Casing Response
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Topics: Engines, Flow (Dynamics), Heat transfer, Plates (structures), Temperature, Thermocouples, Uncertainty, Turbines, Transients (Dynamics), Metals
Proceedings Papers

Kalman Filter Development for Real Time Proper Orthogonal Decomposition Disc Temperature Model

Andrew van Paridon, Marko Bacic, Peter T. Ireland
Proc. ASME. GT2016, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T05A006, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56330
https://doi.org/10.1115/GT2016-56330
View Paper titled, Kalman Filter Development for Real Time Proper Orthogonal Decomposition Disc Temperature Model
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Topics: Disks, Kalman filters, Principal component analysis, Temperature, Damage, Dynamics (Mechanics), Aircraft, Downtime, Dynamic response, Engines
Proceedings Papers

Experimental and Numerical Investigation of Annular Casing Impingement Arrays for Faster Casing Response

Andrew Dann, Priyanka Dhopade, Marko Bacic, Peter Ireland, Leo Lewis
Proc. ASME. GT2016, Volume 5C: Heat Transfer, V05CT18A009, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57619
https://doi.org/10.1115/GT2016-57619
View Paper titled, Experimental and Numerical Investigation of Annular Casing Impingement Arrays for Faster Casing Response
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Topics: Aircraft engines, Annulus, Blades, Compressors, Cooling, Disks, Dynamic response, Engine design, Engines, Flow (Dynamics)
Proceedings Papers

Design and Development of a Full-Scale Generic Transient Heat Transfer Facility (THTF) for Air System Validation

Andrew van Paridon, Andrew Dann, Peter Ireland, Marko Bacic
Proc. ASME. GT2015, Volume 5B: Heat Transfer, V05BT13A005, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42391
https://doi.org/10.1115/GT2015-42391
View Paper titled, Design and Development of a Full-Scale Generic Transient Heat Transfer Facility (THTF) for Air System Validation
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Topics: Design, Transient heat transfer, Flow (Dynamics), Transients (Dynamics), Compressors, Temperature, Turbines, Aircraft engines, Blades, Cavities
Proceedings Papers

Disc Temperature Modelling Using Reduced Order Proper Orthogonal Decomposition Models

Andrew van Paridon, Marko Bacic, Peter T. Ireland, Ron Daniel
Proc. ASME. GT2015, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, V006T05A007, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42388
https://doi.org/10.1115/GT2015-42388
View Paper titled, Disc Temperature Modelling Using Reduced Order Proper Orthogonal Decomposition Models
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Topics: Disks, Modeling, Principal component analysis, Temperature, Flight, Compressors, Cycles, Engines, Fatigue damage, Physics